Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull quota, reiserfs, UDF updates from Jan Kara:
 "Scalability improvements for quota, a few reiserfs fixes, and couple
  of misc cleanups (udf, ext2)"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  reiserfs: Fix use after free in journal teardown
  reiserfs: fix corruption introduced by balance_leaf refactor
  udf: avoid redundant memcpy when writing data in ICB
  fs/udf: re-use hex_asc_upper_{hi,lo} macros
  fs/quota: kernel-doc warning fixes
  udf: use linux/uaccess.h
  fs/ext2/super.c: Drop memory allocation cast
  quota: remove dqptr_sem
  quota: simplify remove_inode_dquot_ref()
  quota: avoid unnecessary dqget()/dqput() calls
  quota: protect Q_GETFMT by dqonoff_mutex

1 files changed, 5 insertions, 1 deletions

diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 709ea92d716f..d46e88a33b02 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -100,7 +100,11 @@ void reiserfs_schedule_old_flush(struct super_block *s)
         struct reiserfs_sb_info *sbi = REISERFS_SB(s);
         unsigned long delay;
 
-        if (s->s_flags & MS_RDONLY)
+        /*
+         * Avoid scheduling flush when sb is being shut down. It can race
+         * with journal shutdown and free still queued delayed work.
+         */
+        if (s->s_flags & MS_RDONLY || !(s->s_flags & MS_ACTIVE))
                 return;
 
         spin_lock(&sbi->old_work_lock);